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參數(shù)資料
| 型號： | TC74HC191AF |
| 廠商： | Toshiba Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | 4-Bit Binary Up/Down Counter |
| 中文描述： | 4位二進(jìn)制加/減計數(shù)器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 448K |
| 代理商： | TC74HC191AF |
TC74HC191AP/AF
2007-10-01
1
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74HC191AP,TC74HC191AF
4-Bit Binary Up/Down Counter
The TC74HC191A are high speed CMOS 4-BIT UP/DOWN
COUNTERs fabricated with silicon gate C2MOS technology.
It achieves the high speed operation similar to equivalent
LSTTL while maintaining the CMOS low power dissipation.
The TC74HC191A is 4-bit binary up/down counter.
They have an asynchronous load input (LOAD) which is active
low.
The direction of counting is determined by the level of
DOWN/UP. When D/U is low, the counter counts up; when D/U is
high, it counts down. Counting occurs on the positive going
transition of the clock input.
Enable input (ENABLE) and two carry inputs (RIPPLE
CLOCK OUT, MAX/MIN) are provided to permit easy cascading
of the counters, which facilitates easy implementation of N-bit
counters without using external gates.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
Features
High speed: fmax = 48 MHz (typ.) at V
CC
= 5 V
Low power dissipation: I
CC
= 4
μ
A (max) at Ta = 25°C
High noise immunity: V
NIH
= V
NIL
= 28% V
CC
(min)
Output drive capability: 10 LSTTL loads
Symmetrical output impedance: |I
OH
| = I
OL
= 4 mA (min)
Balanced propagation delays: t
pLH
～
t
pHL
Wide operating voltage range: V
CC
(opr) = 2~6 V
Pin and function compatible with 74LS191
Pin Assignment
TC74HC191AP
TC74HC191AF
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
: 1.00 g (typ.)
: 0.18 g (typ.)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TC74HC191AP | 4-Bit Binary Up/Down Counter |
| TC74HC191AP_07 | 4-Bit Binary Up/Down Counter |
| TC74HC193AFN | Bridge Rectifier Module; Phases:Three; Repetitive Reverse Voltage Max, Vrrm:1200V; Forward Current Avg Rectified, IF(AV):100A; Forward Voltage Max, VF:1.2V; Package/Case:ME50; Forward Current:100A; Forward Voltage:1.2V |
| TC74HC193AF | SYNCHRONOUS UP/DOWN BINARY COUNTER |
| TC74HC193AP | SYNCHRONOUS UP/DOWN BINARY COUNTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC74HC191AF(F) | 制造商:Toshiba 功能描述:74HC 4-Bit Binary Up / Down Counter SOP Bulk 制造商:Toshiba America Electronic Components 功能描述:IC, 74 series logic 制造商:Toshiba 功能描述:Counter Single 4-Bit Binary UP/Down 16-Pin SOP Tube |
| TC74HC191AP | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:4-Bit Binary Up/Down Counter |
| TC74HC191AP(F) | 制造商:Toshiba America Electronic Components 功能描述:IC, 74 high speed CMOS logic, TC74HC191A |
| TC74HC191AP_07 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:4-Bit Binary Up/Down Counter |
| TC74HC193AF | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:SYNCHRONOUS UP/DOWN BINARY COUNTER |
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